Truck rack



FIG. 1 is a bottom, front and left side perspective view of truck rack, showing my new design;

FIG. 2 is a top, rear and right side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings illustrate the portions of the truck rack, which form no part of the claimed design. 

CLAIM The ornamental design for truck rack, as shown and described. 